Inflationary quantum dynamics and backreaction using a classical-quantum correspondence

  title={Inflationary quantum dynamics and backreaction using a classical-quantum correspondence},
  author={Reginald Christian Bernardo},
  journal={The European Physical Journal C},
  • R. C. Bernardo
  • Published 17 September 2021
  • Physics
  • The European Physical Journal C
We study inflationary dynamics using a recently introduced classical-quantum correspondence for investigating the backreaction of a quantum mechanical degree of freedom to a classical background. Using specifically a coupled Einstein–Klein–Gordon system, an approximation that holds well during the very early inflationary era when modes are very deep inside the Hubble horizon, we show that the backreaction of a mode of the quantum field will renormalize the Hubble parameter only if the mode’s… Expand

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